Clay County Miller Street WWTP, Orange Park, Florida | Wastewater Treatment Plant

Clay County Miller Street WWTP is a municipal wastewater treatment facility located in Orange Park, Clay County, Florida. Serving a population of about 29,750, the plant is part of the region's infrastructure managed by local authorities. Its designed capacity is 1.00 million gallons per day, reflecting its role in handling residential and commercial wastewater from the community. Under the U.S. Clean Water Act, the plant is subject to National Pollutant Discharge Elimination System (NPDES) permits, which set discharge limits to protect water quality. Facilities of this scale typically employ secondary treatment, including biological processes, to meet regulatory standards. The plant's performance is monitored by the Florida Department of Environmental Protection. The treated effluent is discharged into nearby water bodies that drain into the St. Johns River, a major river in northeastern Florida. The St. Johns River flows northward to the Atlantic Ocean, supporting diverse aquatic ecosystems and providing drinking water and recreation. The plant's operations are critical to maintaining the health of this watershed and downstream environments.

The plant discharges into local tributaries that feed the St. Johns River, which ultimately reaches the Atlantic Ocean near Jacksonville. The St. Johns River basin supports a variety of habitats, including freshwater marshes and estuarine zones, and is home to species such as manatees and sturgeon. Effective wastewater treatment is essential to prevent nutrient pollution and protect these sensitive ecosystems.